Finding the Fourth Proportional to 11,699.82, 16,156.59 and 7,515.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,699.82 : 16,156.59 = 7,515.42 : x
2. Step 2: Convert to fraction form
   11,699.82/16,156.59 = 7,515.42/x
3. Step 3: Cross multiply
   11,699.82x = 16,156.59 × 7,515.42
4. Step 4: Simplify right side
   11,699.82x = 121,423,559.62
5. Step 5: Solve for x
   x = 121,423,559.62/11,699.82
6. Step 6: Final answer
   x = 10,378.24